Valve



A. F. FRIBERG Dec. 4, 1951 VALVE 4 Sheets-Sheet 1 Filed Jan. 6, 1947Dec. 4, 1951 Filed Jan. 6, 1947 A. F. FRIBERG 2,577,613

VALVE 4 Sheets-Sheet 2 INVENTOR AL FRED F FRI BERG l6 l3 U A. F. FRIBERGDec. 4, 195] VALVE 4 Sheets-Sheet 4 Filed Jan. 6, 1947 INVENTOR. ALFREDF FRIBERG ATTORNEY Patented Dec. 4, 1951 UNITED state S FAT or FECEVALVE Alfi'e'dlEI' fiilierg, Pontlaznd; ,0mg.

Application January-6, 1947; Serial No; 720395 invention relatestovalves forv pipe: lines andis-particularlyadapted :for: stopping or.allow.-

ingthe-fiowof-fiuidss therethrough ineither direc tion,.-thus-making itzpar-ticularly adapted for use as-a stop'valve. 7

Thepri-mary obj ectof; the. invention. is to em.- pl'oy. the pressurewithinthe .pi-peline by. convert.- ing. said pressure to power and.utilizing. this power. for operating thevalve Thiefluid power: isused.in.such.a manner. as-to either. keep the valve. opened: or. closedposition, and.- is. con.- trolled. a simple hand operation. requiring.considerably less. effort than. that. usually .re.-- q iiredl operating;the customary. valve but still providing a maximum.speed of operation.By. employingthe fluidlpressurewithin the pipe line. the source of.power. for. opening and closing. the valve is providedieliminating theuse of out.- side power such as electric motors, gearing, hand wheelsand so forth.

A' further obj ect of my invention isthe combining of hydraulieflexible'elements'and me chanical mechanisms such" a manner" as" tomaketheval-vea self-'contained'unit. This-combination with independentfiuids ancl'meehan ical leverage will give a balanced dis-placementwithin'the pipe line as the flexible elements changes= shape I from-'-opened andelosed positions;

By employing the: above combination of elementswi-thin the valve I haveprovided a' valve that will operate from the line pressure with aminimum of manuai effortanndwith a maximum of speed employing a-lightsea-t which will stop the flow ofrfiuidin either direction a valve withminimum friction losses and having sealedjoints: torprevent leakage,all-I of the-unites self-contained within. the; valve;

These. andjotherincidentah ohj ectss'will be; apparentzinthe drawings.specification aiidsclaims;

Referring to: the 1 drawings:

Figure l isiar side-view of: mynevfi and; improved valve.

Figurev 2. is. a: plan view ofeFigm'e-L Figure; 3 isanend view taken: online 3-3 ct Figure L.

Figurei amend-sectional: view taken; online 4-4 oi Figure. 2,. parts.brokemawayiorzconvenienceci illustnation,

Figure: 5. is; a plan'lsectional view -taken on.- line 5-5 of Figure 3.

Figureffi isan enlarged isometricperspective sectional. View of. the.valve shown. in open position, taken on.line-. 6.-6-$A of. Figure. L

Figure '7 is an. enlarged. sectional isometric perspective viewtakenionline6..-6-6A: of Fig,- ure 1 showing the valves in closedposition.

10 Claims... (CLlfih-IRM i re 8"is a sectional view taken on line 8--8'of Figure 1, parts omitted for convenience of illustration.

Figure 9 is an end: perspective view of the re tainersring indicatedbynumeral 200]? thedraw ingsgzpartlybrokeniaway for convenienceoi".illustratiom.

Figure ill-is: an: endperspectiverview of one of the flexible.elements". indicatedv by. numerals. [h and; HALLOT. the; drawings.

Figure 11 is an end perspective view of. the hexible-element. l5illustrated in:.the.- drawing; partly brokemaway for convenience ofillustration Figures. 12 is: amend. perspective view of theretainerrringi indicated by numeral I 6 in. the.

drawing, partly. broken away for; convenienceroi: illustration.-

In. the drawings-:.

My-va1veis comprised of a. bodyl-, consisting oftwo partsazand. 2A,hav-ingflanges 3 which are.- secured togethenby, the.-bo1ts.-4, or anyother suit.- able means-i valve may have. any suitable. typeof. inletand outlet to be-connected in-apipe lineas for instance by means. offlanges land-6. Locatedwithinthe body of the valve-are oppositel-ydisposed cones. I and TA which. are rigid and, preferably,.integra1with.- the partsz andl'A respectively, of the. valve. body I. Thesecones are mounted or secured within said parts by the websB' which areintegrally connected with the main body portionsl'. andZA. at 9 and'withthe cones T and 1A at It. The cones are in. engagement at their largerends and the peripheries. I121of 'these enlarged ends are. spacedconcentrically within the inner wall" of the valve body, theseperipheries |"2cooperating1in defining a unitarywa'l'l or'seat 5 4thatis separated from the" inner: body wall by" an annular passage or space'58? Resting within the annular grooves M of'the' valve body-isaflexible ring shaped element l5; which is securedin and to the valvebodyby a retainer ring i6. A seal l-T isprovided between the=parts 2and8fi of theva-lve, a seal? l-S' also beingprov-i'ded between the ends I l1 of the cones-T and 1A. These seals maintain a fiui'd tightjointbetweemthezsaid" valveparts and cone elements. I

Located within thecon'es "I and 5A are flexible elements hand: leeThese. elements-are sealed to. and secured between thecones: E and EA bythe-retainer ring; 21 :which. compresses the flanges: 2d of the.flexible elements l9? and 19A against; thesh0u1ders-22= ofthe cones 'I-and IA.

Located OIL the sideof. the body part. 2; of thea valve. are chambers.23.. and-1.4.. These chambers contain flexible elements 25 and 25A whichare liquid tight, their lower ends having flanges 26 held against theshoulders 21 of the bottom of. the chambers by the sealing and fillingplugs 28 which are held in place by locking nuts 29. The plugs 28 eachhave a passage 30 to the outside and which is closed by a removable plug3I.

A pair of cylinders 32 and 33 are mounted in alignment with the chambers23 and 24 and have pistons 34 and 35 working therein. The lower ends 36of these pistons rest on the top 31 of the flexible elements 25 and 25A.The chambers 23 and 24 are slightly larger than the outside 'diam etersof the pistons 34 and as these pistons travel downwardly they telescopethe upper ends 3'! of the elements 25 and 25A within themselves. Thesepistons are operated by the action of the pressure within the pipe lineand will be more fully described later on.

A walking beam 35 is pivotally mounted to the king bolt 39, which inturn is supported by an offcenter transverse pivot 43 that is revolvablycarried by a rotatably mounted stem 42, as best shown in Fig. 4. Theking bolt 39 has a bifurcated or slotted transversely wedge-shaped head43 that straddles and is pivotally mounted at one end by the transversepin 43 to one end of a keyed transversely wedge-shaped base M of thevalve stem 42. It will be noted that the pivot pin 43 is offcenter withrespect to both the valve stem axis and the king bolt axis ormid-section of the walking beam.

' By this construction, rotation of the valve stem 42 will revolve theoff-center pivot pin 43 and rotate the king bolt 35 relative to thewalking beam 38, thereby varying the relative length of the beam arms 55and 58 with respect to pivot 43. During this revolving movement the head45 swings on the pivot pin 43 relative to the base 4| to swing the kingbolt 39 into alignment with the valve stem 42 and enable rotation of theking bolt relative to the beam. The head 40 and base M are keyedtransversely of the pivot 43 to directly transmit torsion whilepermitting the relative swinging, thereby relieving the pivot 43 oftorsional or transverse strain. The walking beam 38 is restrainedagainst rotation with the king bolt 39 by its arms 55 and 55 riding inguide slots 32 and 33 in the respective cylinders 32 and 33. The pistons34 and 35 also have slots 34' and 35 in their respective side walls andcorresponding to the cylinder slots for accommodation of the beam arms.

I will now describe the charging of the valve by fluid. The flexibleelements 25 and 25A are filled or charged through the passages 33 with asuitable fluid upon removal of the plugs 3 I. When the element 25A,within the chamber 24, is charged fluid flows through the ports 44, 45and 46 and into the annular groove 4'! between the valve body and theouter periphery of the ring I5. This fluid then passes out through theopenings 48 from this annular groove between the ring I6 and theflexible element I 5, expanding the element I across the space orpassage 58, as best shown in Figure '7.

When the flexible element 25 within the chamber 23 is charged, the fluidwill also pass through the ports 49 and 53 into the annular groove 5!surrounding the outer periphery of the retaining ring 20, and throughthe ports 52 into the space 53 within the flexible elements I9 and IilA.This completes the charging with fluid of the various fluid chambers andspaces within the valve.

I will now describe the operation of the valve.

4 Referring to Figures 4, 5 and 6, the valve is shown in an openposition wherein the flexible element I5 is shown moved or contractedagainst the valve body and away from its seat 54, surrounding theperiphery of the cones I and 1A permitting flow through the valve andannular passage 58, as indicated by the arrows.

The flexible element I5 is moved to the position shown by the action ofthe line pressure within the valve. This movement of the element I5forces the liquid from the chamber between the element I5 and ring I3into the annular chamber '41 out through the ports 46, 45 and 44 andinto the flexible element 25A contained within the chamber 24. It willbe noted that the walking beam 38 is in a position for accommodating theelevation of the piston 35, permitting the fluid to enter the flexibleelement 25A and be stored therein.

It will be noted also that the walking beam 38 has depressed the piston34 which has collapsed the flexible element 25, expelling the fluidcontained within the chamber 24 and the element 25 into the space 53,expanding the flexible elements I9 and 59A within the cones l and IA.The pressures within the body of the valve surrounding the cone elements7 and IA, within the flexible elements I5 and 25A are equal, when theparts are in the positions shown in Figs. 4, 5 and 6. These pressureswill create a greater pressure within the chamber 23 and the element 25by the action of the longer lever arm 55 of the walking beam creating agreater pressure that is applied to the piston 34 than that exertedagainst the piston 35 by the line pressure.

The pressure thus developed within said chamber 23 will be transmittedinto the space 53 within the elements I3 and ISA within the cones i andIA, overcoming the tendency of the line pressure to collapse saidelements I3 and I9A, and thereby permitting the liquid within theflexible element I5 to be expelled into the chamber 24 and opening theannular passage 58 to allow fiuid within the line to flow through thevalve.

Referring to Figure '7, I will now describe the operation causing thevalve to close. stem 42 is turned degrees, which reverses the relativelength and the consequent reaction of the lever arms 55 and 55. Thelower arm 55 then becomes the short arm, while the arm 56 becomes thelong arm. Therefore, the pressure within the chamber 24 will beincreased while the pressure within the chamber 23 will become equal tothe line pressure.

Line pressure enters the tips of the cone through the openings 57,collapsing the element I3, as shown. This forces the fluid within thechamber 53 out through the ports 52, passages 50 and ports 49 into theflexible element 25 within the chamber 23, raising the piston 34,operating the long lever arm 56 of the walking beam 38, increasing theleverage on the arm 55 forcing the piston 35 down, collapsing theflexible element 25A and thereby forcin the liquid through the ports 44,45 and 45 into the annular groove 47, and through the openings 43 toexpand or force the flexible element I5 against the seat 54 andintercepting the annular passage 58 to interrupt the flow through thevalve.

From the above description it can be readily understood that thechanging of the relative length of the lever arms by varying theirpivotal axis relative to the center line of the valve stem and walkingbeam, enables the line pressure to The valve unbalance the pressuresbetween the two closed fluid circuits and thereby operate the valve.

Due to the direction of the flow of liquid through the valve, asindicated by the arrows in the drawings, the flexible element I9 isshown as collapsed in Figure 7. On the reversal of flow through thevalve, the flexible element ISA would be the element subject to and becollapsed by line pressure. This is the only difference in the action ofthe present valve when line direction .is reversed.

I do not wish to be limited to the exact mechanical structure asillustrated and described, as other mechanical equivalents may besubstituted still coming within the scope of my claims.

I claim:

1. A valve construction comprising a body having a passage for flow offluid therethrough, a collapsible fluid tight inner chamber mounted inand spaced from the interior wall of said passage, a collapsible fluidtight outer chamber surrounding said inner chamber and cooperative withthe latter to control the flow of fluid through said passage, a pair ofcylinders on said body and having fluid tight communicationsrespectively with said inner and outer chambers for confining anoperating fluid therein, a piston reciprocative in each of saidcylinders, and selectively adjustable means interconnecting said pistonsand rockable by reciprocation of said pistons to control opening andclosing of said passage.

2. A construction as claimed in claim 1, wherein said outer chambercomprises an annular flexible wall concentric with th inner chamher andfixed to the interior wall of said passage, said flexible wall beingcollapsible against said passage wall and movable from the latter andagainst said inner chamber to close said passage when the pressure offluid in said outer collapsible chamber is higher than the pressure offluid in said inner collapsible chamber.

3. A construction as claimed in claim 1, wherein each of said cylindershas a flexible wall fixed interiorly thereof and collapsible by thecompression stroke movement of the pistons.

4. A construction as claimed in claim 1, wherein said selectivelyadjustable means comprises a pivotally adjustable support and a leverfulcrumed off center on said support and adapted to rock so as todepress that piston engaged by its shorter arm by the pressure exertedupon its longer arm by the other of said pistons.

a pair of rigid complementary conical sections joined at their largerbase ends to define a rigid chamber, and a pair of flexible walls fixedin the respective sections, said flexible walls being adapted to assumepositions against the inner walls of the conical sections when expandedin said rigid chamber.

7. A valve construction as defined in claim 1 wherein said innercollapsible chamber comprises a rigid chamber having communication withsaid passage to equalize pressures therein, and a flexible wall fixedwithin said rigid chamber and providing an interior chamber that iscollapsible by the pressure from said passage.

8. A valve construction as defined in claim 1, wherein said innercollapsible chamber comprises a rigid chamber having a diminishingconical taper from its medial portion to its ends axially of saidpassage, a flexible wall mounted in said rigid chamber to define acollapsible interior chamber, and a plurality of apertures at eachreduced end of said rigid chamber for admitting fluid from said passageto collapse said flexible wall interior chamber therein when thepressure of operating fluid therein is lower than the pressure of fluidin said outer chamber.

9. A valve construction as defined in claim 1 wherein said selectivelyadjustable means comprises a lever operatively connected at its respective ends with said pistons, an off-center pivot that is adjustablerelative to said lever to alternate the relative length of the leversarms so as to depress that piston engaged by the shorter arm through thepressure exerted upon the longer arm by the other of said pistons, andmeans for adjusting said cit-center pivot in relation to said lever tovary the relative lengths of its arms and cause said lever to rock andreciprocate said pistons.

10. A valve construction as defined in claim 1 wherein said selectivelyadjustable means comprises a pivotally mounted control member, pivotmeans carried by said control member and having an axis perpendicular toand spaced from the axis of said control member, a pivot pin supportedby said pivot means and having an axis perpendicular to and spaced fromsaid pivot means axis, and a lever connected at its respective ends tosaid pistons and centrally mounted on said pivot pin to be rockableofi-center about the axisof said pivot means while enabling relativerotation of said pivot pin by said control means through said pivotmeans to vary the relation between said pivot means and lever.

ALFRED F. FRIBERG.

REFERENCES CITED The following references are of record in the file ofthis patent:

